A-type star · white star

4 Cep

4 Cep is a white star in the constellation Cepheus 140 ly from Earth. Its surface is about 8,026 K, about 1.4 times the Sun's surface temperature, and it shines at 9.26× the Sun's brightness. At magnitude 5.6 it is bright enough to see with the naked eye; the light you see left it 140 years ago.

140 lybrightness mag 5.59A8V

Also catalogued as HR 7945 · HD 197950 · HIP 102253

8,026 K

temperature

5.59

apparent magnitude

9.26× ☉

luminosity vs Sun

A8V

spectral type

Distance & comparison with our Sun

140 years

at light speed from Earth

1.39×

as hot as the Sun

9.26×

the Sun's light output

2.43

absolute magnitude

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4 CepA-type

Sky regionCepheusthis direction

Nearest stars

Bright stars in Cepheus

Can you see it tonight?

VISIBLE TO THE NAKED EYE

Brightness mag 5.6To see it no equipment neededLook toward Cepheus

Star data from the HYG database v4.2 (Astronexus, CC BY-SA 4.0). Temperature and colour computed by gravityfinder from the B-V colour index; the illustration is generated from that temperature, not a photograph.